Continuity mistake: When the "old man" first puts the lamp on the edge of the box there is no light fixture on which to place the shade. He then returns the lamp to the box and when he brings it out, there is a place to put the shade. Also as he hands it to the mother and then takes it back to put it on the table, there is no electrical cord visible. However, just before he sets it down on the table you can see a cord in his left hand.
Continuity mistake: When the father comes in for hot water for the car, the furnace goes haywire and black smoke comes out of the register. The father goes to the basement to fix the furnace and yells upstairs for somebody to open the damper. The mother goes over and begins to move the bottom lever and then changes her mind and moves the top lever all the way to the left. In the next shot the top lever is all the way to the right while the bottom lever has miraculously moved all the way to the left.
Continuity mistake: When Ralphie's dad is going through the wooden box to see his prize there is a lot of excelsior in it to keep it protectively packaged. When he's bent down digging through it, he has a lot of it on his back. In the next shot when he is standing up, he's perfectly clean.
Visible crew/equipment: On Christmas morning when Ralphie opens up the bunny suit, you can see stage lights in his glasses.
Visible crew/equipment: In the scene after Ralphie beats up Farcus in which Melinda Dillon finds Randie in the cupboard, you can see a shadow moving continuously on the chair pushed under the table on the right hand side of the shot.
Continuity mistake: In the kitchen scene, as Ralphie's father comes in for hot water to thaw the car, and then turns his attention to the furnace, there is a white funnel on the shelf beneath the clock. The camera follows him to the basement steps and the smoke coming from the register. In the next shot, showing the anxious family, Ralphie's mother moves forward and the funnel has moved to the sink behind Ralphie's head.
Continuity mistake: When Ralphie fights Scut Farcus, he starts out with snow on his hat and jacket, from the snowball Scut threw at him. Then in the next frame, there's no snow on him. It goes back and forth like that throughout the whole fight scene.
Revealing mistake: In the scene on Christmas morning when the Bumpus' dogs run in and eat the turkey, during the shot of the dad sitting in the chair reading the comics, one of the dogs bumps the camera and jostles it a little bit.
Continuity mistake: Early in the movie when Ralphie catches up with Flick on the way to school, Ralphie is holding a book or folder that has the top left corner folded over. In the next shot when Schwartz joins them, the fold is now on the bottom left side. Ralphie's arm covers the top corner of the book most of the time so look closely during the last few seconds of the scene.
Continuity mistake: In the playground scene when Flick first sticks his tongue to the flagpole, the street in the background has been snowplowed. The kids all go back in to the classroom without Flick. When the teacher asks "Where's Flick?", and looks out the window and sees him at the pole, the same street in the back ground has not been plowed.
Continuity mistake: During dinner Randy has been eating like a "piggie" and his face is covered with food, when the doorbell rings. As he gets up to answer the door he looks to left and his face is clean but then as they go to the door there are mashed potatoes on his face again.
Continuity mistake: When the teacher is trying to make the kids feel bad for Flick, look at the blackboard. The garland is covering something written that is underlined: all that is seen is a G to the right. As she tells them of the theme, the garland is no longer covering the writing.
Continuity mistake: When Santa pushes Ralphie down the slide with his foot, Santa is actually seated too far away from the slide for his foot to have reached Ralphie's face. In all the wide shots of the scene (especially the very last one as the family leaves the store), you can see that Santa's chair is placed too far away from the entrance of the slide for his foot to have reached the sizable distance to Ralphie's face. But in the tighter P.O.V. shots where Santa is talking to Ralphie just before he gives him the boot, you can see that Santa's chair has been moved over and placed directly in front of the slide so that he can easily reach Ralphie's face. Even better, just as the Elf places Ralphie in Santa's lap, there is a 360 degree panoramic shot that shows just how far away the slide is from Santa's foot.
Continuity mistake: When Ralphie beats up the neighborhood bully there is snow all over the ground, but only in the immediate yard. Right over the fence the ground is clean. In a later shot when Mom is pulling Ralphie off the bully there is snow in all the yards.
Continuity mistake: When everyone is shown in a close up as they open up their Christmas presents, take a look at the father. While he is opening his gift, he has a yellow tie around his neck. When he says, "Didn't I get a tie this year?" the tie is not around his neck anymore.
Visible crew/equipment: During the scene where Ralphie looks out of his window at his snow covered back yard, there is a hat-wearing crew member and some black equipment visible in the lower left of the screen.
Other mistake: When Pierre Andre is giving the members of the "Secret Society" their message, listen carefully. The first number is 12. Towards the end of the message he says 12 again. Since the first letter of the first word is "B", and there are no other "B's" in the entire message, I guess this is another one that slipped by the editor. They also say to set pins to B2, so 12 can't be B.
Visible crew/equipment: Camera lights (and perhaps some crew, barely) can be seen in Ralphie's sunglasses, when he is imagining himself as a blind person.
Continuity mistake: When the teacher collects all the fake buck teeth from the entire class in one hand, there is no way she can hold all twenty sets of teeth in one hand as we're expected to believe. (20 because there are four rows of five desks in the classroom.) She also doesn't deposit anywhere near twenty sets of teeth when we see her hand pour them in the desk drawer.
Other mistake: In the end credits, Santa's name in the song title "Santa Claus is Comin' to Town" is misspelled as "Clause."
Answer: It's most likely a reference to the twin-bed movie standards from the time in which the movie takes place (late '30s to early '40s).